Full list of all 75 The Elder Scrolls V: Skyrim achievements. It takes around 200 hours to unlock all of the achievements in the base game on Windows.
The base game contains 50 achievements, and there are 3 DLC packs containing 25 achievements.
Complete "The Fallen"
Complete "Elder Knowledge"
Complete "Alduin's Wall"
Bounty of 1000 gold in all nine holds
Complete "Diplomatic Immunity"
Capture Solitude or Windhelm
Capture Fort Sungard or Fort Greenwall
Join the Stormcloaks or the Imperial Army
Collect 15 Daedric Artifacts
Learn 20 shouts
Complete "Hail Sithis!"
Complete "Bound Until Death"
Join the Dark Brotherhood
Returned the Thieves Guild to its former glory
Complete "Darkness Returns"
Join the Thieves Guild
Successfully persuade, bribe, and intimidate
Complete 10 side quests
Absorb 20 dragon souls
Complete "The Eye of Magnus"
Clear 50 dungeons
Complete "Revealing the Unseen"
Find 13 Standing Stones
Read 50 Skill Books
Discover 100 Locations
Become a member of the Circle
Complete "Glory of the Dead"
Join the College of Winterhold
Complete 50 Misc Objectives
Reach Level 50
Complete "Bleak Falls Barrow"
Complete "The Way of the Voice"
Join the Companions
Chop wood, mine ore, and cook food
Pick 50 locks and 50 pockets
Buy a house
Make a smithed item, an enchanted item, and a potion
Have 100,000 gold
Get a skill to 100
Acquire a Daedric Artifact
Absorb a dragon soul
Learn all three words of a shout
Reach Level 10
Reach Level 25
Reach Level 5
Select a Standing Stone blessing
Complete "Unbound"
Complete "Dragonslayer"
Escape from jail
Get married
Arrive on Solstheim
Complete "The Temple of Miraak"
Complete "The Path of Knowledge"
Complete "At the Summit of Apocrypha"
Learn all 3 words of Dragon Aspect
Learn the secrets of 5 Black Books
Craft an item out of Stalhrim
Tame and ride 5 dragons
Own a house in Raven Rock
Discover 30 locations on the island of Solstheim
Complete "Lost to the Ages"
Defeat a Legendary Dragon
Change your face
Complete "Awakening"
Complete "Beyond Death"
Complete "Kindred Judgment"
Learn all three words of Soul Tear
Use the special power of Auriel's Bow
Acquire 11 werewolf perks
Acquire 11 vampire perks
Build three houses
Buy three plots of land
Build three wings on a house
Buy a plot of land
Adopt a child